/*
 * Copyright (C) 2005 - 2013 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008 - 2013 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010 - 2013 ProjectSkyfire <http://www.projectskyfire.org/>
 *
 * Copyright (C) 2011 - 2013 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef __EVENTPROCESSOR_H
#define __EVENTPROCESSOR_H

#include "Define.h"

#include<map>

// Note. All times are in milliseconds here.

class BasicEvent {
public:
	BasicEvent() {
		to_Abort = false;
	}
	virtual ~BasicEvent() // override destructor to perform some actions on event removal
	{
	}
	;

	// this method executes when the event is triggered
	// return false if event does not want to be deleted
	// e_time is execution time, p_time is update interval
	virtual bool Execute(uint64 /*e_time*/, uint32 /*p_time*/) {
		return true;
	}

	virtual bool IsDeletable() const {
		return true;
	} // this event can be safely deleted

	virtual void Abort(uint64 /*e_time*/) {
	} // this method executes when the event is aborted

	bool to_Abort; // set by externals when the event is aborted, aborted events don't execute
	// and get Abort call when deleted

	// these can be used for time offset control
	uint64 m_addTime; // time when the event was added to queue, filled by event handler
	uint64 m_execTime; // planned time of next execution, filled by event handler
};

typedef std::multimap<uint64, BasicEvent*> EventList;

class EventProcessor {
public:
	EventProcessor();
	~EventProcessor();

	void Update(uint32 p_time);
	void KillAllEvents(bool force);
	void AddEvent(BasicEvent* Event, uint64 e_time, bool set_addtime = true);
	uint64 CalculateTime(uint64 t_offset) const;
protected:
	uint64 m_time;
	EventList m_events;
	bool m_aborting;
};
#endif
